393442059457 has 2 divisors, whose sum is σ = 393442059458. Its totient is φ = 393442059456.

The previous prime is 393442059403. The next prime is 393442059467. The reversal of 393442059457 is 754950244393.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275878108081 + 117563951376 = 525241^2 + 342876^2 .

It is an emirp because it is prime and its reverse (754950244393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 393442059457 - 2¹¹ = 393442057409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 393442059398 and 393442059407.

It is not a weakly prime, because it can be changed into another prime (393442059467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196721029728 + 196721029729.

It is an arithmetic number, because the mean of its divisors is an integer number (196721029729).

Almost surely, 2^393442059457 is an apocalyptic number.

It is an amenable number.

393442059457 is a deficient number, since it is larger than the sum of its proper divisors (1).

393442059457 is an equidigital number, since it uses as much as digits as its factorization.

393442059457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 393442059457 in words is "three hundred ninety-three billion, four hundred forty-two million, fifty-nine thousand, four hundred fifty-seven".